The proposed relationship of Wilhelmina Marohn as the mother of Philip Harold Fessler and CTF is supported by DNA evidence indicating shared ancestry within the family lines.

Specifically, DNA evidence confirms a distant cousin relationship between KLF (a descendant of the Philip Harold Fessler ancestral line) and MF (a descendant of the CTF ancestral line) with a shared segment of 72.77 cM across 4 HIR segments.

This match is consistent with their placement within these shared ancestral branches.